<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script>
        console.log(3 >= 5); //false
        console.log(2 <= 4); //true
        // 1.我们程序里的等于是 == 会把字符串型转换为数字型
        console.log(3 == 5); //false
        console.log(18 == 18); //true
        console.log(18 == '18'); //trun 
        console.log(18 != 18); //false
        //2.程序中有全等 一模一样 类型一模一样
        console.log(18 === 18); //true
        console.log(18 === '18'); //false
        console.log(18 !== '18'); //true
    </script>
</head>

<body>

</body>

</html>